Trac макросы

Trac макросы — плагины для расширения Trac движка с помощью специальных функций, написанных на Python. Макрос вставляет динамические HTML данные в любом контексте, поддерживающем Wiki-форматирование.

Другой тип макросов — WikiProcessors. Обычно имеют дело с альтернативными форматами разметки и представления больших блоков информации (как подсветка исходных кодов).

Использование макросов

Вызов макроса заключается в двойные квадратные скобки. Как и все функции Python, макросы могут принимать аргументы, перечисленные через запятую в круглых скобках после имени макроса.

Trac макросы могут быть также написаны как TracPlugins. Это позволяет им некотороые дополнительные возможности, которых обычные макросы не имеют, например, непосредственный доступ к HTTP запросу.

Пример

Список из 3 страниц, начинающихся с 'Trac', которые недавно изменялись:

 [[RecentChanges(Trac,3)]]

Отображается:

Sep 25, 2024

• TracModPython (diff)
• TracInstall (diff)
• TracDev/PortingFromGenshiToJinja/Example (diff)

Доступные макросы

Отметьте, что следующий список будет содержать макро-документацию, только если вы не используете OO оптимизацию, или не установлена опция PythonOptimize в mod_python.

[[MacroList]]

[[AboutWikiBoxes]]

Display a wiki page on how to use boxes.

[[AboutWikiPhrases]]

Display a wiki page on how to use attentional phrases.

[[Image]]

Embed an image in wiki-formatted text.

The first argument is the file specification. The file specification may reference attachments in three ways:

• module:id:file, where module can be either wiki or ticket, to refer to the attachment named file of the specified wiki page or ticket.
• id:file: same as above, but id is either a ticket shorthand or a Wiki page name.
• file to refer to a local attachment named 'file'. This only works from within that wiki page or a ticket.

The file specification may also refer to:

• repository files, using the source:file syntax (source:file@rev works also).
• files, using direct URLs: /file for a project-relative, //file for a server-relative, or http://server/file for absolute location. An InterWiki prefix may be used.
• embedded data using the ​rfc2397 data URL scheme, provided the URL is enclosed in quotes.

The remaining arguments are optional and allow configuring the attributes and style of the rendered <img> element:

• digits and unit are interpreted as the size (ex. 120px, 25%) for the image
• right, left, center, top, bottom and middle are interpreted as the alignment for the image (alternatively, the first three can be specified using align=... and the last three using valign=...)
• link=some TracLinks... replaces the link to the image source by the one specified using a TracLinks. If no value is specified, the link is simply removed.
• inline specifies that the content generated be an inline XHTML element. By default, inline content is not generated, therefore images won't be rendered in section headings and other one-line content.
• nolink means without link to image source (deprecated, use link=)
• key=value style are interpreted as HTML attributes or CSS style indications for the image. Valid keys are:
  • align, valign, border, width, height, alt, title, longdesc, class, margin, margin-(left,right,top,bottom), id and usemap
  • border, margin, and margin-* can only be a single number (units are pixels).
  • margin is superseded by center which uses auto margins

Examples:

[[Image(photo.jpg)]]               # simplest
[[Image(photo.jpg, 120px)]]        # with image width size
[[Image(photo.jpg, right)]]        # aligned by keyword
[[Image(photo.jpg, nolink)]]       # without link to source
[[Image(photo.jpg, align=right)]]  # aligned by attribute

You can use an image from a wiki page, ticket or other module.

[[Image(OtherPage:foo.bmp)]]    # from a wiki page
[[Image(base/sub:bar.bmp)]]     # from hierarchical wiki page
[[Image(#3:baz.bmp)]]           # from another ticket
[[Image(ticket:36:boo.jpg)]]    # from another ticket (long form)
[[Image(source:/img/bee.jpg)]]  # from the repository
[[Image(htdocs:foo/bar.png)]]   # from project htdocs dir
[[Image(shared:foo/bar.png)]]   # from shared htdocs dir (since 1.0.2)

Adapted from the Image.py macro created by Shun-ichi Goto <gotoh@…>

[[InterTrac]]

Provide a list of known InterTrac prefixes.

[[InterWiki]]

Provide a description list for the known InterWiki prefixes.

[[KnownMimeTypes]]

List all known mime-types which can be used as WikiProcessors.

Can be given an optional argument which is interpreted as mime-type filter.

[[LastVoted]]

Show most recently voted resources.

[[MacroList]]

Display a list of all installed Wiki macros, including documentation if available.

Optionally, the name of a specific macro can be provided as an argument. In that case, only the documentation for that macro will be rendered.

Note that this macro will not be able to display the documentation of macros if the PythonOptimize option is enabled for mod_python!

[[PageOutline]]

Display a structural outline of the current wiki page, each item in the outline being a link to the corresponding heading.

This macro accepts four optional parameters:

• The first is a number or range that allows configuring the minimum and maximum level of headings that should be included in the outline. For example, specifying "1" here will result in only the top-level headings being included in the outline. Specifying "2-3" will make the outline include all headings of level 2 and 3, as a nested list. The default is to include all heading levels.
• The second parameter can be used to specify a custom title (the default is no title).
• The third parameter selects the style of the outline. This can be either inline or pullout (the latter being the default). The inline style renders the outline as normal part of the content, while pullout causes the outline to be rendered in a box that is by default floated to the right side of the other content.
• The fourth parameter specifies whether the outline is numbered or not. It can be either numbered or unnumbered (the former being the default). This parameter only has an effect in inline style.

[[RecentChanges]]

List all pages that have recently been modified, ordered by the time they were last modified.

This macro accepts two ordered arguments and a named argument. The named argument can be placed in any position within the argument list.

The first parameter is a prefix string: if provided, only pages with names that start with the prefix are included in the resulting list. If this parameter is omitted, all pages are included in the list.

The second parameter is the maximum number of pages to include in the list.

The group parameter determines how the list is presented:

group=date

The pages are presented in bulleted lists that are grouped by date (default).

group=none

The pages are presented in a single bulleted list.

Tip: if you only want to specify a maximum number of entries and don't want to filter by prefix, specify an empty first parameter, e.g. [[RecentChanges(,10,group=none)]].

[[RepositoryIndex]]

Display the list of available repositories.

Can be given the following named arguments:

format

Select the rendering format:

• compact produces a comma-separated list of repository prefix names (default)
• list produces a description list of repository prefix names
• table produces a table view, similar to the one visible in the Browse View page

glob

Do a glob-style filtering on the repository names (defaults to '*')

order

Order repositories by the given column (one of "name", "date" or "author")

desc

When set to 1, order by descending order

[[ShowPhrases]]

Renders in a table the list of known phrases that are highlighted to catch attention.

Comment: Any delimiter ():<> adjacent to a phrase will not be presented. This makes it possible to naturally write FIXME:, for example, but view the phrase highlighted without the colon (:) which would not look natural. Prefixing a phrase with ! prevents it from being highlighted.

[[ShowSymbols]]

Renders in a table the list of known symbols. Optional argument is the number of columns in the table (defaults 3).

[[SubscriberList]]

Display a list of all installed notification subscribers, including documentation if available.

Optionally, the name of a specific subscriber can be provided as an argument. In that case, only the documentation for that subscriber will be rendered.

Note that this macro will not be able to display the documentation of subscribers if the PythonOptimize option is enabled for mod_python!

[[TicketQuery]]

Wiki macro listing tickets that match certain criteria.

This macro accepts a comma-separated list of keyed parameters, in the form "key=value".

If the key is the name of a field, the value must use the syntax of a filter specifier as defined in TracQuery#QueryLanguage. Note that this is not the same as the simplified URL syntax used for query: links starting with a ? character. Commas (,) can be included in field values by escaping them with a backslash (\).

Groups of field constraints to be OR-ed together can be separated by a literal or argument.

In addition to filters, several other named parameters can be used to control how the results are presented. All of them are optional.

The format parameter determines how the list of tickets is presented:

• list — the default presentation is to list the ticket ID next to the summary, with each ticket on a separate line.
• compact — the tickets are presented as a comma-separated list of ticket IDs.
• count — only the count of matching tickets is displayed
• rawcount — only the count of matching tickets is displayed, not even with a link to the corresponding query (since 1.1.1)
• table — a view similar to the custom query view (but without the controls)
• progress — a view similar to the milestone progress bars

The max parameter can be used to limit the number of tickets shown (defaults to 0, i.e. no maximum).

The order parameter sets the field used for ordering tickets (defaults to id).

The desc parameter indicates whether the order of the tickets should be reversed (defaults to false).

The group parameter sets the field used for grouping tickets (defaults to not being set).

The groupdesc parameter indicates whether the natural display order of the groups should be reversed (defaults to false).

The verbose parameter can be set to a true value in order to get the description for the listed tickets. For table format only. deprecated in favor of the rows parameter

The rows parameter can be used to specify which field(s) should be viewed as a row, e.g. rows=description|summary

The col parameter can be used to specify which fields should be viewed as columns. For table format only.

For compatibility with Trac 0.10, if there's a last positional parameter given to the macro, it will be used to specify the format. Also, using "&" as a field separator still works (except for order) but is deprecated.

[[TitleIndex]]

Insert an alphabetic list of all wiki pages into the output.

Accepts a prefix string as parameter: if provided, only pages with names that start with the prefix are included in the resulting list. If this parameter is omitted, all pages are listed. If the prefix is specified, a second argument of value hideprefix can be given as well, in order to remove that prefix from the output.

The prefix string supports the standard relative-path notation when using the macro in a wiki page. A prefix string starting with ./ will be relative to the current page, and parent pages can be specified using ../.

Several named parameters can be specified:

• format=compact: The pages are displayed as comma-separated links.
• format=group: The list of pages will be structured in groups according to common prefix. This format also supports a min=n argument, where n is the minimal number of pages for a group.
• format=hierarchy: The list of pages will be structured according to the page name path hierarchy. This format also supports a min=n argument, where higher n flatten the display hierarchy
• depth=n: limit the depth of the pages to list. If set to 0, only toplevel pages will be shown, if set to 1, only immediate children pages will be shown, etc. If not set, or set to -1, all pages in the hierarchy will be shown.
• include=page1:page*2: include only pages that match an item in the colon-separated list of pages. If the list is empty, or if no include argument is given, include all pages.
• exclude=page1:page*2: exclude pages that match an item in the colon- separated list of pages.

The include and exclude lists accept shell-style patterns.

[[TopVoted]]

Show listing of voted resources ordered by total score.

[[TracAdminHelp]]

Display help for trac-admin commands.

Examples:

[[TracAdminHelp]]               # all commands
[[TracAdminHelp(wiki)]]         # all wiki commands
[[TracAdminHelp(wiki export)]]  # the "wiki export" command
[[TracAdminHelp(upgrade)]]      # the upgrade command

[[TracGuideToc]]

Display a table of content for the Trac guide.

This macro shows a quick and dirty way to make a table-of-contents for the Help/Guide. The table of contents will contain the Trac* and WikiFormatting pages, and can't be customized. See the ​TocMacro for a more customizable table of contents.

[[TracIni]]

Produce documentation for the Trac configuration file.

Typically, this will be used in the TracIni page. The macro accepts two ordered arguments and two named arguments.

The ordered arguments are a configuration section filter, and a configuration option name filter: only the configuration options whose section and name start with the filters are output.

The named arguments can be specified:

section

a glob-style filtering on the section names

option

a glob-style filtering on the option names

[[TranslatedPages]]

Macro to show the translated pages list.

Simply calling that macro in a page adds a menu linking to all available translations of a page.

A language page (usually TracLanguages) must provide the language codes as a table with following entries:

||<language code>||<language name>||<english name>||<description>||<base language link indication>||

The description contains the text displayed above language links in that language (usually a variant of 'Other languages'). A table title line starting with ||= is not parsed.

The base language link indication is the default value for wikitr: links (see below) and describes how links to base language should be formatted. It must contain one {t} which is replaced by the label (e.g. {t} (en) to append a note in brackets). Other parameters are {b} for the base language code, {c} for the base language code in lowercase letters and {n} for the base language name.

The Macro accepts arguments as well:

• revision≤num> to specify the version of the base page when last translated, a negative revision indicates that a page needs updating in the status overview table
• outdated≤text> mark the page as outdated with given comment
• silent don't output empty chapter for show options when nothing is shown

• showoutdated to show all pages, where revision does not match base revision
• showmissing to show all pages, where translation is missing
• showproblems to show all pages which have problems
• showuntranslated to show all untranslated pages
• showstatus to show one big status table
• skipmissing skip links to missing pages in status table (speed up display a lot)
• lang≤code> to restrict output of show outdated, status or missing to a specific language

• label_outdated label to display when using the showoutdated option

Use wikitr:[basetext:] in links to reference the translated form of a page when it exists, the original otherwise. In case the optional part basetext: is used this text is used to indicate links to the base language (see above for format). When using these links translators do not need to update links when they step by step add translated pages. Using this macro on the base langue pages does no harm, but may help in translation when doing copy and paste.

Links can look like [[wikitr:Link|Label]], [wikitr::{t} ({n}):Link|Label]], [[wikitr::Link|Label]], [wikitr:Link], [wikitr:Link Label] and so on (see TracLinks).

[[VoteList]]

Show listing of most recent votes for a resource.

[[Workflow]]

Render a workflow graph.

This macro accepts a TracWorkflow configuration and renders the states and transitions as a directed graph. If no parameters are given, the current ticket workflow is rendered.

In WikiProcessor mode the width and height arguments can be specified (Defaults: width = 800 and height = 600).

The repository-scoped path of a workflow file can be specified as either a macro or WikiProcessor file argument. The file revision can be specified by appending @<rev> to the path. The file argument value must be enclosed in single or double quotes. (Since 1.3.2).

Examples:

[[Workflow()]]

[[Workflow(go = here -> there; return = there -> here)]]

[[Workflow(file=/contrib/workflow/enterprise-workflow.ini@1)]]

{{{#!Workflow file="/contrib/workflow/enterprise-workflow.ini"
}}}

{{{#!Workflow width=700 height=700
leave = * -> *
leave.operations = leave_status
leave.default = 1

create = <none> -> new
create.default = 1

create_and_assign = <none> -> assigned
create_and_assign.label = assign
create_and_assign.permissions = TICKET_MODIFY
create_and_assign.operations = may_set_owner

accept = new,assigned,accepted,reopened -> accepted
accept.permissions = TICKET_MODIFY
accept.operations = set_owner_to_self

resolve = new,assigned,accepted,reopened -> closed
resolve.permissions = TICKET_MODIFY
resolve.operations = set_resolution

reassign = new,assigned,accepted,reopened -> assigned
reassign.permissions = TICKET_MODIFY
reassign.operations = set_owner

reopen = closed -> reopened
reopen.permissions = TICKET_CREATE
reopen.operations = del_resolution
}}}

[[box]]

View wiki text in a box.

Syntax:

{{{#!box type align=... width=...
wiki text
}}}

or preferably when content is short:

[[box(wiki text, type=..., align=..., width=...)]]

where

• type is an optional flag, or parameter, to call for attention depending on type of matter. When type is set, the box is decorated with an icon (except for news) and colored, depending on what urgency the type represents:

Urgency (box color)	type
warn (red)	bug, critical, error, important, stop, warning
highlight (yellow)	help, information, note, question, tips
elaborate (blue)	bad, chat, comment, discussion, good, no, nok, ok, talk, yes
news (green)	news
normal (white)	configuration, configure, details, look, magnifier, tool

type may be abbreviated as long as the abbreviation is unique for one of the keywords above.

• align is optionally one of right, left or center. The rbox macro is an alias for align=right.
• width is optional and sets the width of the box (defaults auto except for right aligned boxes which defaults a fixed width). width should be set when align=center for proper results.

Examples:

{{{#!box warn
= Warning
Beware of the bugs
}}}

[[box(Beware of the bugs, type=warn)]]

A style parameter is also accepted, to allow for custom styling of the box. See also the rbox, newsbox and imagebox macros (processors).

[[imagebox]]

Present a centered box suitable for one image.

Syntax:

{{{#!imagebox
wiki text
}}}

This box is typically used together with the Image macro:

{{{#!imagebox
[[Image(file)]]

Caption
}}}

Note that the size parameter of the Image macro may not behave as expected when using relative sizes (%).

The following parameters are also accepted:

• align — One of right, left or center (defaults center).
• width — Set the width of the box (defaults auto except for right aligned boxes which defaults a fixed width).
• style — Custom styling of the box.

See also the box, rbox and newsbox macros (processors).

[[lbox]]

View a left-aligned box. (This is a shorthand for box align=left)

Syntax:

{{{#!lbox type width=...
wiki text
}}}

or preferably when content is short:

[[lbox(wiki text, type=..., width=...)]]

where

• type is an optional flag, or parameter, to call for attention depending on type of matter. When type is set, the box is decorated with an icon (except for news) and colored, depending on what urgency the type represents:

Urgency (box color)	type
warn (red)	bug, critical, error, important, stop, warning
highlight (yellow)	help, information, note, question, tips
elaborate (blue)	bad, chat, comment, discussion, good, no, nok, ok, talk, yes
news (green)	news
normal (white)	configuration, configure, details, look, magnifier, tool

type may be abbreviated as long as the abbreviation is unique for one of the keywords above.

• width is optional and sets the width of the box (defaults a fixed width). Use width=auto for an automatically sized box.

Examples:

{{{#!lbox warn
= Warning
Beware of the bugs
}}}

[[lbox(Beware of the bugs, type=warn)]]

A style parameter is also accepted, to allow for custom styling of the box. See also the box, newsbox and imagebox macros (processors).

[[newsbox]]

Present a news box to the right. (This is a shorthand for rbox news)

Syntax:

{{{#!newsbox
wiki text
}}}

The following parameters are also accepted:

• width — Set the width of the box (defaults a fixed width).
• style — Custom styling of the box.

See also the box, rbox and imagebox macros (processors). (Comment: This box corresponds to the well-known NewsFlash macro.)

[[rbox]]

View a right-aligned box. (This is a shorthand for box align=right)

Syntax:

{{{#!rbox type width=...
wiki text
}}}

or preferably when content is short:

[[rbox(wiki text, type=..., width=...)]]

where

• type is an optional flag, or parameter, to call for attention depending on type of matter. When type is set, the box is decorated with an icon (except for news) and colored, depending on what urgency the type represents:

Urgency (box color)	type
warn (red)	bug, critical, error, important, stop, warning
highlight (yellow)	help, information, note, question, tips
elaborate (blue)	bad, chat, comment, discussion, good, no, nok, ok, talk, yes
news (green)	news
normal (white)	configuration, configure, details, look, magnifier, tool

type may be abbreviated as long as the abbreviation is unique for one of the keywords above.

• width is optional and sets the width of the box (defaults a fixed width). Use width=auto for an automatically sized box.

Examples:

{{{#!rbox warn
= Warning
Beware of the bugs
}}}

[[rbox(Beware of the bugs, type=warn)]]

A style parameter is also accepted, to allow for custom styling of the box. See also the box, newsbox and imagebox macros (processors).

Макросы в сети

Сайт ​Trac Hacks содержит большую коллекцию макросов и других Trac plugins плагинов, созданных Trac-сообществом. Если вы ищете или написали новый макрос, которым хотите поделиться с другими, пожалуйста, не стесняйтесь заходить на этот сайт.

Разработка своих макросов

Макросы, подобно самому Trac, пишутся на ​языке программирования Python.

Для дополнительной информации о разработке макроса, см. TracDev на главной странице проекта.

!#comment
[wiki:TracDev development resources] 

Реализация

Здесь 2 простых примера, как создавать макрос для Trac 0.11, различия между старым и новым стилем макросов можно посмотреть в исходнике source:trunk/sample-plugins/Timestamp.py​, а также в source:trunk/wiki-macros/README.

Макрос без аргументов

Этот код должен быть сохранен как TimeStamp.py, чтобы использоваться в Trac по имени макроса.

from datetime import datetime
# Note: since Trac 0.11, datetime objects are used internally

from genshi.builder import tag

from trac.util.datefmt import format_datetime, utc
from trac.wiki.macros import WikiMacroBase

class TimestampMacro(WikiMacroBase):
    """Inserts the current time (in seconds) into the wiki page."""

    revision = "$Rev$"
    url = "$URL$"

    def expand_macro(self, formatter, name, args):
        t = datetime.now(utc)
        return tag.b(format_datetime(t, '%c'))

Макрос с аргументами

Этот код должен быть сохранен как HelloWorld.py (в папке plugins/).

from trac.wiki.macros import WikiMacroBase

class HelloWorldMacro(WikiMacroBase):
    """Simple HelloWorld macro.

    Note that the name of the class is meaningful:
     - it must end with "Macro"
     - what comes before "Macro" ends up being the macro name

    The documentation of the class (i.e. what you're reading)
    will become the documentation of the macro, as shown by
    the !MacroList macro (usually used in the WikiMacros page).
    """

    revision = "$Rev$"
    url = "$URL$"

    def expand_macro(self, formatter, name, args):
        """Return some output that will be displayed in the Wiki content.

        `name` is the actual name of the macro (no surprise, here it'll be
        `'HelloWorld'`),
        `args` is the text enclosed in parenthesis at the call of the macro.
          Note that if there are ''no'' parenthesis (like in, e.g.
          [[HelloWorld]]), then `args` is `None`.
        """
        return 'Hello World, args = ' + unicode(args)
    
    # Note that there's no need to HTML escape the returned data,
    # as the template engine (Genshi) will do it for us.

expand_macro details

expand_macro должно возвращать также простую строку Python, которая будет интерпретирована как HTML, или предпочтительный объект разметки (используйте from trac.util.html import Markup). Markup(string) просто вставляет строку, которую интерпретатор преобразует в HTML строку как есть. Также вам может понадобиться использовать импорт Formatter from trac.wiki import Formatter.

Если ваш макрос создает wiki-разметку вместо HTML, вы можете конвертировать ее в HTML примерно так:

  text = "whatever wiki markup you want, even containing other macros"
  # Convert Wiki markup to HTML, new style
  out = StringIO()
  Formatter(self.env, formatter.context).format(text, out)
  return Markup(out.getvalue())